# python的内置函数 
# max,min,sum,len,input,print,int,str,list

xh = {'wangxiyu':12,'wangyichen':13, 'caixinxin':26, 'zhangzhihan':40}
xh['liuying']=5
xh['zhenglin']=50
s = ['china','usa','japan']
age=[12,10,11,12,11]
name='123214'
xuefen=xh.values()

a=max(1,200,200,4,100)
a=min(1,200,-200,1,100)
a=sum([100,200,300])
a=len(age)
a=int('1000')
a=str(xh)
a=list(name)
print(a)
# print(s[1][1])